Major John Waldenville suffered serious injuries after being shot in the face outside Cattleman's Steakhouse last year.
Prosecutors claim Christopher Baker pulled the trigger and are using recorded phone calls from the county jail as evidence.
During those calls, Baker could be heard saying, "I had to make some moves. I had to get some money in my pocket. I was doing bad."
"A defendant's own words can always be used against them in a criminal trial, as long as it's not made under interrogation or without Miranda warnings," attorney Jacqui Ford said.
Despite those statements, Baker still maintains his innocence.
The jury also got to leave the courthouse and toured Stockyards City outside Cattleman's where the shooting took place.